物体A和B在光滑的水平面上相向运动,它们的初动能之比EKA: EKB = 4 : 1

物体A和B在光滑的水平面上相向运动,它们的初动能之比EKA: EKB = 4 : 1,两者相遇后发生正碰。它们在碰撞的过程中,动能同时减小到零,又同时增大,最后两者反向运动,则两物体的质量之比mA : mB

A. 1 : 1       B. 4 : 1      C. 1 : 4     D. 1 : 16

答案

C


解析:

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